Waveguide tapers fabrication by femtosecond laser induced element redistribution in glass

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Macías Montero, Manuel and Dias, Antonio and Sotillo Buzarra, Belén and Moreno Zárate, Pedro and Ariza, Rocío and Fernández Sánchez, Paloma and Solís, Javier (2020) Waveguide tapers fabrication by femtosecond laser induced element redistribution in glass. Journal of lightwave technology, 38 (23). pp. 6578-6583. ISSN 0733-8724

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Official URL: http://dx.doi.org/10.1109/JLT.2020.3015013




Abstract

Here in we present the fabrication and performance of waveguide tapers produced by femtosecond laser induced element redistribution in modified phosphate glasses. More particularly, it is demonstrated that by controlling the scan velocity during the writing process it is possible to adequately tune both the size of the modified area and the refractive index contrast to produce waveguides that can cope with mode field diameters in the range of 7 mu m. In addition, we fabricated tapered structures through the induction of an acceleration in the laser scanning velocity, resulting in a device that can efficiently convert a wide range of mode fields. The fine control achieved over the index contrast in the range of 10^(-3) and 10^(-2) would allow the production of a wide variety of tapers that could potentially be used to couple numerous photonic devices.


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© 2020 IEEE
M.M. acknowledges the postdoctoral Juan de la Cierva
Incorporación grant (IJCI-2017-33317)) of the Spanish Ministry of Research and Innovation. B.S. acknowledges the postdoctoral grant from the “Atracción de Talento” Program funded by the Comunidad de Madrid (2017-T2/IND-5465). P.M.-Z. acknowledges the postdoctoral scholarship #235346 awarded by the National Council of Science and Technology from Mexico (CONACYT).

Uncontrolled Keywords:Ion migration; Photonic devices; Principles; Gratings; Fs-laser writing; ion migration; optical waveguides; phosphate glasses; waveguide tapers
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:63361
Deposited On:15 Dec 2020 15:59
Last Modified:22 Jan 2021 17:29

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